Exploring The Linear Viscoelastic Properties Structure Relationship in Processed Fruit Tissues

  • S. M. Alzamora
  • P. E. Viollaz
  • V. Y. Martínez
  • A. B. Nieto
  • D. Salvatori
Part of the Food Engineering series book series (FSES)

Texture is a quality attribute that is critical in determining the acceptability of raw and processed fruits, so it is of primary concern in product development and/or preservation techniques design. Texture is a sensory attribute that can only be sensed by people. Perceived texture results from an array of sensory inputs, arising before and during consumption (Jack et al., 1995). As a rule, one texture property is based on various physical properties. However, product texture is closely related with product rheology, and this is one of the most obvious reasons for studying fruit rheology.

Mechanical properties of biologic tissues depend on contributions from the different levels of structure: the molecular level (i.e., the chemicals and interactions between the constituting polymers), the cellular level (i.e., the architecture of the tissue cells and their interaction) and the organ level (i.e., the arrangement of cells into tissues and their chemical and physical interactions) (Ilker and Szczesniak, 1990; Waldron et al., 1997; Jackman and Stanley, 1995a; Alzamora et al., 2000). Fruits are composite materials and consist of various structural elements with different mechanical properties. The edible portion of most plant foods is predominantly composed of parenchymatous tissue. The parenchyma cells, approximately 50–500µm across and polyhedral or spherical in shape, show, from out to inner, the middle lamella that glue adjacent cells; the primary cell wall with the plasmodesmata; the plasma membrane; a thin layer of parietal cytoplasm containing different organelles (mitochondrias, spherosomes, plastids, chloroplasts, endoplasmic reticulum, nucleus and so on); and, bound by the tonoplast membrane, one or more vacuoles that contain a watery solution of organic acids, salts, pigments, and flavors that are responsible for the osmotic potential of the cell. Cells and intercellular spaces are arranged into tissues, and these last into the final organ (Brett and Waldron, 1996).

This chapter is part of a comprehensive study on the relationship between structure, rheology and texture of raw and minimally processed fruit. With this aim, this chapter is intended to explore the correlation between the linear viscoelastic (oscillatory shear and creep) properties and the microstructure/ultrastructure of selected fruits (melon, apple), as affected by osmotic dehydration and/or calcium incorporation.


Middle Lamella Osmotic Dehydration Creep Recovery Osmotic Treatment Apple Sample 
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  1. Alzamora, S.M., Castro, M.A., Nieto, A.B., Vidales, S.L., and Salvatori D.M., 2000, The Role of Tissue Microstructure in the Textural Characteristics of Minimally Processed Fruits, in: Minimally Processed Fruits and Vegetables, S.M. Alzamora, M.S. Tapia and A. López-Malo (eds.), Aspen Publishers Inc., Gaithersburg, pp. 153–171.Google Scholar
  2. Alzamora, S.M., Cerrutti, P., Guerrero, S., and López-Malo A., 1995, Minimally Processed Fruits By Combined Methods, in: Food Preservation by Moisture Control: Fundamentals and Applications, G.V. Barbosa-Cánovas, and J. Welti-Chanes (eds.), Technomics Publishing Co., Lancaster, pp. 463–492.Google Scholar
  3. Alzamora, S.M., Salvatori, D.M., Tapia, M.S., López-Malo, A., Welti-Chanes, J., and Fito P., 2005, Novel Functional Foods from Vegetable Matrices Impregnated with Biologically Active Compounds, J. Food Eng. 67:205.CrossRefGoogle Scholar
  4. Anino, S.V., Salvatori, D.M., and Alzamora S.M., 2006, Changes in Calcium Level and Mechanical Properties of Apple Tissue Due to Impregnation with Calcium Salts, Food Res. Int. 39:154.CrossRefGoogle Scholar
  5. Anino, S., Salvatori, D.M., Castro, M.A., and Alzamora S.M., 2002, Cambios Estructurales en Tejido de Manzana Fortificado con Calcio, IX Congreso Argentino de Ciencia y Tecnología de Alimentos. Asociación Argentina de Tecnólogos Alimentarios, Buenos Aires.Google Scholar
  6. Betoret, N., Fito, P., Martínez-Monzó, J., Gras, M.L., and Chiralt A., 2001, Viability of Vegetable Matrices as Support of Physiologically Active Components, in: Proceedings of the International Congress on Engineering and Food (ICEF 8), vol. II, J. Welti-Chanes, G.V.Barbosa-Cánovas, and J.M. Aguilera, (eds.), Technomic Publishing Co., Inc., Lancaster, pp. 1366–1371.Google Scholar
  7. Bourne M.C., 1976, Texture of Fruits and Vegetables, in: Rheology and Texture in Food Quality, J.M. DeMan, P.W. Voisey, V.F. Rasper, and D.W. Stanley (eds.), Van Nostrand Reinhold/AVI, New York, pp. 275–307.Google Scholar
  8. Brett, C.T., and Waldron K.W., 1996, Physiology and Biochemistry of Plant Cell Walls, 2nd ed., Chapman & Hall, London.Google Scholar
  9. Brownleader, M.D., Jackson, P., Moabsheri, A., Pantelides, A.T., Sumar, S. Trevan M., and Dey P.M., 1999, Molecular Aspects of Cell Wall Modifications During Fruit Ripening, Crit. Rev. Food Sci. Nutr. 39:149.CrossRefGoogle Scholar
  10. Carpita, N.C., and Gibeaut D.M., 1993, Structural Models of Primary Cell Walls in Flowering Plants: Consistency of Molecular Structure with the Physical Properties of the Walls During Growth, Plant J. 3:1.CrossRefGoogle Scholar
  11. Cosgrove D.J., 1997, Relaxation in a High-Stress Environment: The Molecular Bases of Extensible Cell Walls and Cell Enlargement, Plant Cell 9:1031.CrossRefGoogle Scholar
  12. Cosgrove D.J., 1998, Cell Wall Loosening by Expansions, Plant Physiol. 118:333.CrossRefGoogle Scholar
  13. Chappell, T.W., and Hamann D.D., 1968, Poisson’s Ratio and Young’s Modulus for Apple Flesh Under Compresive Loading, Trans. Am. Soc. Agric. Eng. 11:608.Google Scholar
  14. Datta, A., and Morrow C.T., 1983, Graphical and Computational Analysis of Creep Curves, Trans. Am. Soc. Agric. Eng. 26:1870.Google Scholar
  15. De Baerdemaeker, J.G. and Segerlind L.J., 1976. Determination of Viscoelastic Properties of Apple Fresh, Trans. ASAE 19:346, 353.Google Scholar
  16. Ferry J.D., 1980, Viscoelastic Properties of Polymers, 3rd ed., Wiley, New York.Google Scholar
  17. Fito P., 1994, Modelling of Vacuum Osmotic Dehydration of Foods, J. Food Eng. 22:313.CrossRefGoogle Scholar
  18. Fito, P., and Chiralt A., 1997, An Approach to the Modeling of Solid Food-Liquid Operations: Application to Osmotic Dehydration, in: Food Engineering 2000, P. Fito, G. Barbosa-Cánovas, and E. Ortega, (eds.), Chapman & Hall, New York, pp. 231–269.Google Scholar
  19. Gibson, G.R., and Williams C.M., 2000, Functional Foods. Concept to Product, Woodhead Publishing Limited, Cornwall, pp. 1–27.Google Scholar
  20. Goldberg I., 1994, Functional Foods, Designer Foods, Pharmafoods, Nutraceuticals, Chapman & Hall., New York, USA.Google Scholar
  21. Gras, M., Vidal-Brotons, D., Betoret, N., Chiralt, A., and Fito P. 2002, The Response of Some Vegetables to Vacuum Impregnation, Innov. Food Sci. Em. Technol. 3:263.CrossRefGoogle Scholar
  22. Gras, M.L., Vidal, D., Betoret, N., Chiralt, A., and Fito P., 2003, Calcium Fortification of Vegetables by Vacuum Impregnation Interactions with Cellular Matrix, J. Food Eng. 56:279.CrossRefGoogle Scholar
  23. Ilker, R., and Szczesniak A.S., 1990, Structural and Chemical Bases for Texture of Plant Foodstuffs, J. Text. Stud. 21:1.CrossRefGoogle Scholar
  24. Jack, F.R., Paterson, A., and Piggot J., 1995, Perceived Texture: Direct and Indirect Methods for Use in Product Development, Int. J. Food Sci. Technol. 30:1.Google Scholar
  25. Jackman, R.L., Marangoni, A.G., and Stanley D.W., 1992, The Effects of Turgor Pressure on Puncture and Viscoelastic Properties of Tomato Tissue, J. Text. Stud. 23:491.CrossRefGoogle Scholar
  26. Jackman, R.L., and Stanley D.W., 1995a, Perspectives in the Textural Evaluation of Plant Foods, Trends Food Sci. Technol. 6:187.CrossRefGoogle Scholar
  27. Jackman, R.L., and Stanley D.W., 1995b, Creep Behaviour of Tomato Pericarp Tissue as Influenced by Ambient Temperature Ripening and Chilled Storage, J. Text. Stud. 26:537.CrossRefGoogle Scholar
  28. John, M.A., and Dey P.M., 1986, Postharvest Changes in Fruit Cell Walls, Adv. Food Res. 30:139.CrossRefGoogle Scholar
  29. Khan, S.A., Roger, J.R., and Raghavan S.R., 1997, Rheology: Tools and Methods, in: Aviation Fuels with Improved Fire Safety, Proceedings.The National Academy of Sciences USA, Washington D.C., pp. 39–46.Google Scholar
  30. Kunzek, H., Kabbert, R., and Gloyna D., 1999, Aspects of Material Science in Food Processing: Changes in Plant Cell Walls of Fruits and Vegetables, Z. Lebensm. Unters Forsch. A. 208:233.CrossRefGoogle Scholar
  31. Lin, T.T., and Pitt R.E., 1986, Rheology of Apple and Potato Tissue as Affected by Cell Turgor Pressure. J. Text. Stud. 17:291.CrossRefGoogle Scholar
  32. Martinez, V.Y., 2005, Alteraciones Microestructurales y Ultraestructurales de Tejidos Vegetales Mínimamente Procesados. Impacto en las Características Mecánicas. Thesis, University of Buenos Aires.Google Scholar
  33. Martínez, V.Y., Nieto, A.B., Viollaz, P.E., and Alzamora S.M., 2005, Viscoelatic Behaviour of Melon Tissue as Influenced by Blanching and Osmotic Dehydration, J. Food Sci. 70:12.CrossRefGoogle Scholar
  34. Mastrángelo, M.M., Rojas, A.M., Castro, M.A., Gerschenson, L.N., and Alzamora S.M., 2000, Texture and Structure of Glucose-Infused Melon, J Sci. Food Agric. 80:769.CrossRefGoogle Scholar
  35. Mittal, J. P., and Mohsenin N.N., 1987, Rheological Characterization of Apple Cortex, J. Text. Stu. 18:65.CrossRefGoogle Scholar
  36. Mújica-Paz, H., Hernández-Fuentes, M.A., López-Malo, A., Palou, E., Valdez-Fragoso, A., and Welti-Chanes J., 2002, Incorporation of Minerals to Apple Slabs Through Vacuum Impregnation and Osmotic Dehydration, in: 2002 IFT Annual Meeting Book of Abstracts, Anaheim, pp. 74, 306–22.Google Scholar
  37. Nieto, A., Salvatori, D., Castro, M.A., and Alzamora S.M., 2004, Structural Changes in Apple Tissue During Glucose and Sucrose Osmotic Dehydration: Shrinkage, Porosity, Density and Microscopic Features, J. Food Eng. 61:269.CrossRefGoogle Scholar
  38. Ortiz, C., Salvatori, D., and Alzamora S.M., 2003, Fortification of Mushroom with Calcium by Vacuum Impregnation, Latin Amer. Appl. Res. 33:191.Google Scholar
  39. Park S.W., 2001, Analytical Modelling of Viscoelastic Dampers for Structural and Vibration Control, Int J. Sol. Struct. 38:8065.CrossRefGoogle Scholar
  40. Petrell, R.J., Mohsenin, N.N., and Wallner S., 1979, Dynamic Mechanical Properties of the Apple Cortex in Relation to Sample Location and Ripening, J. Text. Stu. 10:217.CrossRefGoogle Scholar
  41. Pitt R.E., 1992, Viscoelastic Properties of Fruits and Vegetables, in: Viscoelastic Properties of Foods, M.A. Rao, and J. F. Steffe (eds.), Elsevier Science, Amsterdam, pp. 49–76.Google Scholar
  42. Rojas, A.M., Gerschenson, L.N., and Marangoni A.G., 2001, Contributions of Cellular Components to the Rheological Behaviour of Kiwifruit, Food Res. Int. 34:189.CrossRefGoogle Scholar
  43. Sherman P., 1970, Industrial Rheology, Academic Press, London.Google Scholar
  44. Tapia, M.S., Schulz, E., Gómez, V., López-Malo, A., and Welti-Chanes J., 2003, A New Approach to Vacuum Impregnation and Functional Foods: Melon Impregnated with Calcium and Zinc, in: IFT Annual Meeting Book of Abstracts, Institute of Food Technologists, Chicago, p. 158, Abstract 60D–2.Google Scholar
  45. Tshoegl N.W., 1989, The Phenomenological Theory of Linear Viscoelastic Behavior, Springer, Berlin.Google Scholar
  46. Van Vliet T., 2002, On the Relation Between Texture Perception and Fundamental Mechanical Parameters for Liquids and Time Dependent Solids, Food Qual. Pref. 13:227.CrossRefGoogle Scholar
  47. Waldron, K.W., Smith, A.C., Parr, A.J., Ng, A., and Parker M.L., 1997, New Approaches to Understanding and Controlling Cell Separation in Relation to Fruit and Vegetable Texture, Trends Food Sci. Technol. 8:213.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • S. M. Alzamora
    • 1
  • P. E. Viollaz
    • 1
  • V. Y. Martínez
    • 1
  • A. B. Nieto
    • 1
  • D. Salvatori
    • 1
  1. 1.Departamento de QuímicaUniversidad Nacional del ComahueArgentina

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